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Ferrous sulphate heptahydrate is used to fortify foods with iron. The amount (in grams) of the salt required to achieve 10 ppm of iron in 100 kg of wheat is _______. Atomic weight: Fe=55.85; S=32.00; O=16.00)

Answer: 4.96 g 10 ppm of Fe means 10 g of Fe in 106 g of wheat. So, for 100 kg i.e.,105 g of wheat. needed is 1 g. So, for 1 g of Fe, the mass... View Article

What will be the electrode potential for the given half cell reaction at pH= 5?

2 2 → 2 + 4 + + 4 –; ° = – 1.23 (R=8.314 J mol-1K-1; temp.=298 K; oxygen under std. atm. Pressure of 1 bar.) Answer:2 2 → 2 + 4 + + 4 –;... View Article

The volume (in mL) of 0.125 M ₃ required to quantitatively precipitate chloride ions in 0.3 g of [ ( ₃ )₆ ] ₃ is _____.

[ ( 3 )6 ] 3 = 267.46 / 3 = 169.87 g/mpl Answer: To react completely with one mole of [ 6] 3 , 3 moles of 3 is required. 0.3 g [ 6 ] 3... View Article

The reagent used for the given conversion is:

a. 2 6 b. 4 c. 4 d. 2, Answer: 2 6 does not reduce amide, carbonyl group and cyanide. It selectively reduces carboxylic acid to... View Article

Which of the given statement is not true for glucose?

a. The pentacetate glucose does not react with hydroxylamine to give oxime b. Glucose reacts with hydroxylamine to form oxime. c. Glucose... View Article

A flask contains a mixture of isohexane and 3-methylpentane. One of the liquids boils at 63 °C while the other boils at 60 °C. What is the best way to separate the two liquids and which one will be distilled out first?

a. Fractional distillation, isohexane b. Simple distillation, 3-methylpentane c. Fractional distillation, 3-methylpentane d. Simple... View Article

The major products A and B in the following reactions are:

Answer: First reaction will generate a free radical which is stabilized by cyanide group. The alkene undergo homolytic cleavage at the... View Article

Among the gases (i) – (v), the gases that cause greenhouse effect are:

i. 2 ii. 2 iii. iv. 2 v. 3 a. i, ii iii and iv b. i, iii, iv and v c. i and iv d. i, ii, iii and v Answer: 2, 3, 2 vapours... View Article

Arrange the following compounds in increasing order of C—OH bond length: methanol, phenol, p-ethoxyphenol

a. Phenol < methanol < p-ethoxyphenol b. methanol < p-ethoxyphenol < phenol c. Phenol < p-ethoxyphenol < methanol d.... View Article

What is the major product in the following reaction

Answer: 3... View Article

The decreasing order of reactivity towards dehydrohalogenation (E₁) reaction of the following compounds is:

a. B > A > D > C b. B > D > C > A c. B > D > A > C d. D > B > C > A Answer: In E1mechanism, the rate... View Article

The strength of an aqueous NaOH solution is most accurately determined by titrating: (Note: consider that an appropriate indicator is used)

a. Aq. NaOH in a pipette and aqueous oxalic acid in a burette b. Aq. NaOH in a volumetric flask and concentrated H2SO4 in a conical flask c.... View Article

For the Balmer series in the spectrum of H-atom, v̅ = R_H [ (1/n₁²) – (1/n₂²)] The correct statements among (A) to (D) are:

A) The integer n1= 2. B) The ionization energy of hydrogen can be calculated from the wave number of these lines. C) The lines of longest... View Article

M	T	W	T	F	S	S
			1	2	3	4
5	6	7	8	9	10	11
12	13	14	15	16	17	18
19	20	21	22	23	24	25
26	27	28	29	30	31

Archives

Ferrous sulphate heptahydrate is used to fortify foods with iron. The amount (in grams) of the salt required to achieve 10 ppm of iron in 100 kg of wheat is _______. Atomic weight: Fe=55.85; S=32.00; O=16.00)

What will be the electrode potential for the given half cell reaction at pH= 5?

The volume (in mL) of 0.125 M ₃ required to quantitatively precipitate chloride ions in 0.3 g of [ ( ₃ )₆ ] ₃ is _____.

The reagent used for the given conversion is:

Which of the given statement is not true for glucose?

A flask contains a mixture of isohexane and 3-methylpentane. One of the liquids boils at 63 °C while the other boils at 60 °C. What is the best way to separate the two liquids and which one will be distilled out first?

The major products A and B in the following reactions are:

Among the gases (i) – (v), the gases that cause greenhouse effect are:

Arrange the following compounds in increasing order of C—OH bond length: methanol, phenol, p-ethoxyphenol

What is the major product in the following reaction

The decreasing order of reactivity towards dehydrohalogenation (E₁) reaction of the following compounds is:

The strength of an aqueous NaOH solution is most accurately determined by titrating: (Note: consider that an appropriate indicator is used)

The third ionization enthalpy is minimum for:

When gypsum is heated to 393K, it forms:

As per Hardy-Schulze formulation, the flocculation values of the following for ferric hydroxide sol are in the order:

A graph of vapour pressure and temperature for three different liquids X, Y and Z is shown below:

The complex that can show fac- and mer-isomers is:

The stoichiometry and solubility product of a salt with the solubility curve given below is, respectively:

the first ionization energy of na mg al and si

For the Balmer series in the spectrum of H-atom, v̅ = R_H [ (1/n₁²) – (1/n₂²)] The correct statements among (A) to (D) are:

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